Chapter 10.2, Problem 24SSC

Interpretation Introduction

Interpretation:

This is to be explained how the mass of an atom and mass of one mole of an atom is related to the molar mass.

Concept introduction:

Mass of an atom or atomic mass refers the mass of the elements present in an atom.

$1\text{ mole}$ of any substance contains $\left(6\cdot 023\times {10}^{23}\right)$ atoms called Avogadro’s number. Whether it is a compound or a single element, one mole has $6\cdot 023\times {10}^{23}$ units and the mass of this one mole of an atom is called molar mass.

Answer to Problem 24SSC

Molar mass is the mass of one mole of atoms measured in grams.

Explanation of Solution

Molar mass is defined as the sum of the atomic masses of all the atoms present in one mole of the compound. The molar mass differs for every element/compound depending on the massof the atoms present in one mole i.e. $6\cdot 023\times {10}^{23}$ atoms. Hence molar mass gives the relation between mass of an atom and mass of one mole of atoms.

Conclusion

One mole contains $6\cdot 023\times {10}^{23}$ atoms and their mass give molar mass.